:art: Allow exponent notation

diff --git a/ast b/ast
index 1233e819aee03cc1239f0461cfe6a2bc02b78edb..b1fe9221196f766a5b3d11f6021340d747cab95c 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 1233e819aee03cc1239f0461cfe6a2bc02b78edb
+Subproject commit b1fe9221196f766a5b3d11f6021340d747cab95c